strong_json.gemspec in strong_json-0.7.1 vs strong_json.gemspec in strong_json-0.8.0

@@ -15,10 +15,12 @@
 
   spec.files         = `git ls-files -z`.split("\x0")
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
+  spec.metadata = { "steep_types" => "sig" }
 
   spec.add_development_dependency "bundler", "~> 1.6"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"
+  spec.add_development_dependency "steep", "~> 0.8"
 end